It's not beyond the realsm of possibility.
You'll need a deposit - that's pretty much true for everyone these days.
From there, it depends how much mortgage you need - maybe it's 'getable' on just your income.
Or maybe there will be lenders that can cope with her kind of temporary.
Really, i'd suggest you see a mortgage broker - actually, as it can be tricky to see just how good a broker is, I would suggest you see a number of brokers until you are satisfied that you can or can't geta mortgage.
I would say there is no broker who can say he knows everything, so don't be disheartened by a 'no'. Just move on.
Adrian